EP3245420B1 - Adjustable damping device - Google Patents

Adjustable damping device Download PDF

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Publication number
EP3245420B1
EP3245420B1 EP15816715.5A EP15816715A EP3245420B1 EP 3245420 B1 EP3245420 B1 EP 3245420B1 EP 15816715 A EP15816715 A EP 15816715A EP 3245420 B1 EP3245420 B1 EP 3245420B1
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EP
European Patent Office
Prior art keywords
valve
emergency operation
stage valve
armature
spring
Prior art date
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Active
Application number
EP15816715.5A
Other languages
German (de)
French (fr)
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EP3245420A1 (en
Inventor
Thomas Manger
Lukas Ruhmann
Stefan Schmitt
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ZF Friedrichshafen AG
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ZF Friedrichshafen AG
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Publication of EP3245420A1 publication Critical patent/EP3245420A1/en
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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
    • F16F9/00—Springs, vibration-dampers, shock-absorbers, or similarly-constructed movement-dampers using a fluid or the equivalent as damping medium
    • F16F9/32—Details
    • F16F9/44—Means on or in the damper for manual or non-automatic adjustment; such means combined with temperature correction
    • F16F9/46—Means on or in the damper for manual or non-automatic adjustment; such means combined with temperature correction allowing control from a distance, i.e. location of means for control input being remote from site of valves, e.g. on damper external wall
    • F16F9/464—Control of valve bias or pre-stress, e.g. electromagnetically
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
    • F16F9/00—Springs, vibration-dampers, shock-absorbers, or similarly-constructed movement-dampers using a fluid or the equivalent as damping medium
    • F16F9/32—Details
    • F16F9/44—Means on or in the damper for manual or non-automatic adjustment; such means combined with temperature correction
    • F16F9/46—Means on or in the damper for manual or non-automatic adjustment; such means combined with temperature correction allowing control from a distance, i.e. location of means for control input being remote from site of valves, e.g. on damper external wall
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
    • F16F9/00—Springs, vibration-dampers, shock-absorbers, or similarly-constructed movement-dampers using a fluid or the equivalent as damping medium
    • F16F9/32—Details
    • F16F9/3207—Constructional features
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
    • F16F9/00—Springs, vibration-dampers, shock-absorbers, or similarly-constructed movement-dampers using a fluid or the equivalent as damping medium
    • F16F9/32—Details
    • F16F9/34—Special valve constructions; Shape or construction of throttling passages
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K31/00—Actuating devices; Operating means; Releasing devices
    • F16K31/02—Actuating devices; Operating means; Releasing devices electric; magnetic
    • F16K31/06—Actuating devices; Operating means; Releasing devices electric; magnetic using a magnet, e.g. diaphragm valves, cutting off by means of a liquid
    • F16K31/0675—Electromagnet aspects, e.g. electric supply therefor
    • F16K31/0679—Electromagnet aspects, e.g. electric supply therefor with more than one energising coil
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
    • F16F2228/00—Functional characteristics, e.g. variability, frequency-dependence
    • F16F2228/06—Stiffness
    • F16F2228/066—Variable stiffness
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
    • F16F2230/00—Purpose; Design features
    • F16F2230/24—Detecting or preventing malfunction, e.g. fail safe

Definitions

  • the invention relates to an adjustable damping valve device according to the preamble of patent claim 1.
  • an adjustable damping valve device which comprises a preliminary stage valve and a main stage valve. Furthermore, an emergency operating valve is connected in series with the pre-stage valve, which assumes an emergency operating position in the event of a power failure for an actuator of the damping valve device. In turn, at least one pressure relief valve is connected in parallel to the emergency operating valve, which opens in the event of an excess pressure in a control chamber of the damping valve device and thus determines a maximum damping force setting.
  • the damping valve device thus comprises at least four individual valves which have to be coordinated with one another and which require considerable manufacturing effort.
  • the emergency operating valve comprises an annular emergency operating valve body which is biased by an emergency operating valve spring on a valve seat surface which is separate with respect to the pre-stage valve.
  • the DE 10 2010 063 386 B4 discloses an alternative solution.
  • the at least one pressure relief valve is also arranged in the emergency operating valve. You can provide small pressure relief valves based on the necessary space, which you can z. B. screwed into the emergency operation valve. Pressure relief valves of this type are available as a structural unit and are comparatively inexpensive. However, because of the small design, they are comparatively sensitive to the manufacturing tolerances such. B. with the closing spring. This problem can be compensated for with an adjustable support surface for the closing spring, but the achievable volume flows through a single pressure relief valve are comparatively low. Consequently, several pressure relief valves have to be provided, which increases the assembly effort.
  • the EP 0561 404 A1 describes a generic damping valve device with a main stage valve, a preliminary stage valve and an emergency operating valve.
  • the emergency operation valve has a separate valve seat surface to the pre-stage valve.
  • An emergency service valve spring does not exert any operating force on the pilot valve body.
  • the pre-stage valve and the emergency operating valve are hydraulically arranged in series. If the emergency operating valve body were removed from an intact pre-stage valve or a functioning power supply, this situation would have no influence on the behavior of the pre-stage valve, so that there are two functionally separate valves.
  • a similar design is present in the embodiment according to FIG. 6.
  • the emergency operating valve body is supported on the pre-stage valve body, but there are undoubtedly two separate valves that are hydraulically connected in parallel.
  • the object of the present invention is to provide an adjustable damping valve device with an emergency operating function, which has a simpler overall structure compared to the prior art.
  • the advantage is that the dual function of the pre-stage valve emergency operating valve means that two valves, namely the previous emergency operating valve and at least one pressure relief valve, can be omitted.
  • the emergency operation anchor is supported on the edge of a cover surface of the pre-stage valve body.
  • the top surface has a step profile with a stepped contact surface for the emergency operating anchor. Reduced by this geometry the processing effort, since only a small proportion of the area has to be manufactured precisely.
  • the emergency operation anchor can have a stepped seat surface in the direction of the top surface of the pre-stage valve body.
  • the seating surface preferably has a cutting edge geometry.
  • the cutting geometry aims at a line contact between the emergency service anchor and the pre-stage valve body, so that an angular error between the emergency service anchor and the pre-stage valve body can be easily compensated for
  • the emergency operating anchor In order to promote the mobility of the emergency operating anchor, it has a flow connection which connects two spaces of the damping valve device which are separated from one another by the emergency operating anchor. This means that no hydraulically closed rooms can form that could cause a vacuum or a dynamic pressure.
  • the emergency operating anchor can have at least one branch channel in the area of the seat surface.
  • the strength of the emergency operation anchor is not weakened as a result.
  • the emergency operating anchor can have at least one flow connection on its outer lateral surface.
  • the Figure 1 shows a damping valve device 1 with an axially split damping valve housing 3 for a vibration damper of any design.
  • the damping valve device 1 is provided for an external arrangement with respect to an outer cylinder of the vibration damper, but the construction principle can easily be applied to a damping valve device e.g. B. be adapted to a piston rod.
  • an actuator 7 known per se is arranged, which comprises a coil 9, which acts on a pre-stage valve 13 via an armature 11.
  • a main stage valve 15 is actuated, which generates the damping force in the vibration damper.
  • the pre-stage and main stage valve 13; 15 are arranged in the second damping valve housing section 17, which has a basic tube shape without an intermediate wall.
  • the main stage valve 15 comprises a main stage valve body 19 which is guided in an axially movable manner in a housing insert 21 separate from the damping valve housing 3.
  • the housing insert 21 is pot-shaped and forms a control chamber 23, via which the main stage valve 15 is controlled by the pre-stage valve 13.
  • a bottom 25 of the housing insert 21 has an opening 27 in which a guide shaft 29 of the main stage valve body 19 is guided.
  • An axial channel 31 and a transverse channel 33 run in the guide shaft 29 and connect the control chamber 23 to the preliminary stage valve 13 via a passage 35 in the base 25.
  • the housing insert 21 has a profile on the outside. As a result, mutually facing surfaces of the damping valve housing 3 and the housing insert 21 form at least one flow channel 37 for a damping medium flow within the damping valve device 1 and on the outside, the base 25 has radial channels 55 which merge into the flow channels 37.
  • the main stage valve 15 is designed as a seat valve, so that the main stage valve body 19 rests on a main stage valve seat surface 39.
  • a passage channel 41 Radially outside the main stage valve seat surface 39, at least one passage channel 41 is provided, which is arranged radially inside the damping valve housing 3.
  • the outside of the housing insert 21 present flow channel 37 is connected to the at least one passage channel 41.
  • the main stage valve seat surface 39 is in turn formed by a valve insert 43, via which the housing insert 21 is positioned axially in the damping valve housing 3.
  • the valve insert 43 has damping channels 45 which interact with at least one valve disk 47.
  • this is an option.
  • the housing insert 21 is axially biased by a spring element 49 in the form of a disc spring against a support surface 51 of the damping valve housing 3.
  • the spring element 49 is in turn supported on the valve insert 43.
  • a damping valve device 1 with a main stage valve 15 and a pre-stage valve 13 would be functional.
  • this adjustable damping valve device 1 has an emergency operating function.
  • An emergency anchor 53 is axially movably guided within the second damping valve housing section 17.
  • An emergency operating spring 57 in the form of a compression spring biases the emergency operating armature 53 onto the pre-stage valve body 59 of the pre-stage valve 13.
  • the emergency operating spring 57 is supported on a component fixed to the housing and the emergency operating armature 53 lies on the edge side with a direct contact on a cover surface 61 of the pre-stage valve body 59.
  • the top surface 61 has a step profile with a stepped contact surface 63 for the emergency operating anchor 53.
  • the emergency operation anchor 53 also has a stepped seat surface 65 in the direction of the top surface 61 of the pre-stage valve body 59, the seat surface 65 preferably having a cutting edge geometry.
  • the emergency operation anchor 53 is spatially arranged between a yoke body 67 of the actuator 7 and the bottom 25 of the housing insert 21 and thus separates two Displacements 69; 71 for the emergency service anchor. To avoid back pressure in one of the displacements 69; To have 71 built up, the emergency operating anchor 53 has at least one flow connection 73 which separates the two separate rooms 69; 71 of the damping valve device 1 connects to one another.
  • a flow connection 73 can optionally be designed in the area of the seat surface 65 as a branch channel, for. B. in the form of a simple embossing.
  • the emergency operating anchor can have the flow connection 73 on its outer lateral surface.
  • the emergency operation anchor is shown in its axial length, comparable to the prior art.
  • the right half of the cut illustrates the space advantage that can be achieved with the invention as a result of a narrow emergency operating anchor 53.
  • damping medium is displaced into the damping valve device 3 via a pipe connection of the valve insert 43.
  • the damping medium passes through at least a damping channel 45 and the at least one valve disk 47.
  • an lifting force acts on the main stage valve body 19.
  • the damping medium passes through the passage 35 into the control chamber 23 and thus exerts a closing force on the main stage valve body 19.
  • the pre-stage valve 13 controls a discharge cross-section from the control chamber 23 into the flow channel 37 between the housing insert 21 and the second damping valve housing section 17.
  • the closing force acting on the pre-stage valve body 59 is then only determined by a spring arrangement 75 of the actuator 7, which acts on the armature 11 of the pre-stage valve 13.
  • the spring arrangement 75 of the armature 11 and the emergency operating spring 57 are functionally connected in parallel.
  • the outflowing damping medium reaches an annular space via the radial channels 55 and the flow channel 37 between the second damping valve housing section 17 and the valve insert 43, via whose at least one passage channel 41 the damping medium of the pre-stage valve 13 flows out.
  • the entire closing force of the emergency operating spring 57 acts via the contact between the emergency operating armature 53 and the pre-stage valve body 59.
  • the spring forces of the spring arrangement 75 and the emergency operating spring 57 determine the closing force acting on the pre-stage valve body 59.
  • the pressure in the axial channel 31 acts in the opening direction and allows the pre-stage valve body 59 to lift off.
  • a closing pressure builds up on the main stage valve body 19 in the control chamber 23. Consequently, the pre-stage valve 13 assumes the emergency operating function even if the power supply for the actuator 7 fails.
  • damping medium flows radially outward and likewise flows out of the damping valve housing 3 via the at least one passage channel 41.
  • the damping medium then flows into an equalizing or working space, not shown.
  • the invention is not restricted to use in a damping valve with a flow direction on one side.
  • the Figure 2 shows an embodiment of an adjustable damping valve device 1 on a piston rod 77 between two working spaces 79 filled with damping medium; 81.
  • the structure of the pre-stage valve 13 and the main stage valve 15 are in detail from the DE 10 2012 210 460 B3 known. Deviating is an emergency operation anchor 53 according to the Figure 1 used, which is also supported directly on the pre-stage valve body 59, it is structurally identical to the version according to Fig. 1 , In this embodiment too, the preliminary stage valve 13 takes on the function of an emergency operating valve.

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Fluid-Damping Devices (AREA)
  • Magnetically Actuated Valves (AREA)

Description

Die Erfindung betrifft eine verstellbare Dämpfventileinrichtung gemäß dem Oberbegriff von Patentanspruch 1.The invention relates to an adjustable damping valve device according to the preamble of patent claim 1.

Aus der DE 10 2012 210 460 B3 ist eine verstellbare Dämpfventileinrichtung bekannt, die ein Vorstufenventil und ein Hauptstufenventil umfasst. Des Weiteren ist in Reihe zum Vorstufenventil ein Notbetriebsventil geschaltet, das bei einem Ausfall der Energieversorgung für einen Aktuator der Dämpfventileinrichtung eine Notbetriebsstellung einnimmt. Dem Notbetriebsventil ist wiederum mindestens ein Überdruckventil parallel geschaltet, das bei einem Überdruck in einem Steuerraum der Dämpfventileinrichtung öffnet und damit eine maximale Dämpfkrafteinstellung bestimmt. Damit umfasst die Dämpfventileinrichtung mindestens vier Einzelventile, die aufeinander abgestimmt werden müssen und die einen erheblichen Fertigungsaufwand bedingen.From the DE 10 2012 210 460 B3 an adjustable damping valve device is known which comprises a preliminary stage valve and a main stage valve. Furthermore, an emergency operating valve is connected in series with the pre-stage valve, which assumes an emergency operating position in the event of a power failure for an actuator of the damping valve device. In turn, at least one pressure relief valve is connected in parallel to the emergency operating valve, which opens in the event of an excess pressure in a control chamber of the damping valve device and thus determines a maximum damping force setting. The damping valve device thus comprises at least four individual valves which have to be coordinated with one another and which require considerable manufacturing effort.

Das Notbetriebsventil umfasst einen ringförmigen Notbetriebsventilkörper, der von einer Notbetriebsventilfeder auf eine bezogen auf das Vorstufenventil separate Ventilsitzfläche vorgespannt wird.The emergency operating valve comprises an annular emergency operating valve body which is biased by an emergency operating valve spring on a valve seat surface which is separate with respect to the pre-stage valve.

Die DE 10 2010 063 386 B4 offenbart eine Alternativlösung. Das mindestens eine Überdruckventil ist ebenfalls in dem Notbetriebsventil angeordnet. Man kann dafür bezogen auf den notwendigen Bauraum kleine Überdruckventile vorsehen, die man z. B. in das Notbetriebsventil einschraubt. Derartige Überdruckventile stehen als Baueinheit zur Verfügung und sind vergleichsweise kostengünstig. Allerdings sind sie wegen der kleinen Bauform vergleichsweise empfindlich hinsichtlich der Fertigungstoleranzen z. B. bei der Schließfeder. Dieses Problem kann man zwar mit einer verstellbaren Abstützfläche für die Schließfeder kompensieren, doch sind die realisierbaren Volumenströme durch ein einziges Überdruckventil vergleichsweise gering. Folglich sind mehrere Überdruckventile vorzusehen, wodurch der Montageaufwand wächst.The DE 10 2010 063 386 B4 discloses an alternative solution. The at least one pressure relief valve is also arranged in the emergency operating valve. You can provide small pressure relief valves based on the necessary space, which you can z. B. screwed into the emergency operation valve. Pressure relief valves of this type are available as a structural unit and are comparatively inexpensive. However, because of the small design, they are comparatively sensitive to the manufacturing tolerances such. B. with the closing spring. This problem can be compensated for with an adjustable support surface for the closing spring, but the achievable volume flows through a single pressure relief valve are comparatively low. Consequently, several pressure relief valves have to be provided, which increases the assembly effort.

Die EP 0561 404 A1 beschreibt eine gattungsbildende Dämpfventileinrichtung mit einem Hauptstufenventil, einem Vorstufenventil und einem Notbetriebsventil. In der Ausführung nach Fig. 2 verfügt das Notbetriebsventil über eine zum Vorstufenventil separate Ventilsitzfläche. Eine Notbetriebsventilfeder übt keine Betriebskraft auf den Vorstufenventilkörper aus. Das Vorstufenventil und das Notbetriebsventil sind in dieser Ausführung hydraulisch in Reihe angeordnet. Wenn man bei einem intakten Vorstufenventil bzw. einer funktionierenden Stromversorgung den Notbetriebsventilkörper entfernen würde, dann hätte diese Situation keinen Einfluss auf das Verhalten des Vorstufenventils, sodass funktional zwei getrennte Ventile vorliegen.The EP 0561 404 A1 describes a generic damping valve device with a main stage valve, a preliminary stage valve and an emergency operating valve. In execution to Fig. 2 the emergency operation valve has a separate valve seat surface to the pre-stage valve. An emergency service valve spring does not exert any operating force on the pilot valve body. In this version, the pre-stage valve and the emergency operating valve are hydraulically arranged in series. If the emergency operating valve body were removed from an intact pre-stage valve or a functioning power supply, this situation would have no influence on the behavior of the pre-stage valve, so that there are two functionally separate valves.

In der Ausführung nach Fig. 6 liegt eine ähnliche Bauform vor. Der Notbetriebsventilkörper stützt sich zwar auf dem Vorstufenventilkörper ab, jedoch liegen zweifellos zwei getrennte Ventile vor, die hydraulisch parallel geschaltet sind.A similar design is present in the embodiment according to FIG. 6. The emergency operating valve body is supported on the pre-stage valve body, but there are undoubtedly two separate valves that are hydraulically connected in parallel.

Die Aufgabe der vorliegenden Erfindung besteht darin, eine verstellbare Dämpfventileinrichtung mit einer Notbetriebsfunktion bereitzustellen, das einen im Vergleich zum Stand der Technik einfacheren Gesamtaufbau aufweist.The object of the present invention is to provide an adjustable damping valve device with an emergency operating function, which has a simpler overall structure compared to the prior art.

Die Aufgabe der Erfindung wird durch die Merkmale des Patentanspruchs 1 gelöst.The object of the invention is achieved by the features of patent claim 1.

Der Vorteil besteht darin, dass durch die Doppelfunktion Vorstufenventil-Notbetriebsventil zwei Ventile, nämlich das bisherige Notbetriebsventil und mindestens ein Überdruckventil entfallen können.The advantage is that the dual function of the pre-stage valve emergency operating valve means that two valves, namely the previous emergency operating valve and at least one pressure relief valve, can be omitted.

Neben dem baulichen Aufwand lässt sich auch ein axialer Bauraumvorteil erzielen.In addition to the structural effort, an axial installation space advantage can also be achieved.

Um eventuelle Fertigungsungenauigkeiten zu minimieren, stützt sich der Notbetriebsanker randseitig auf einer Deckfläche des Vorstufenventilkörpers ab. Je größer der Berührkreis zwischen Notbetriebsanker und dem Vorstufenventilkörper ist, umso geringer wirken sich maßliche Fehler aus.In order to minimize any manufacturing inaccuracies, the emergency operation anchor is supported on the edge of a cover surface of the pre-stage valve body. The larger the contact circle between the emergency service anchor and the pre-stage valve body, the less dimensional errors have an effect.

In weiterer vorteilhafter Ausgestaltung weist die Deckfläche ein Stufenprofil mit einer abgesetzten Kontaktfläche für den Notbetriebsanker auf. Durch diese Geometrie reduziert sich der Bearbeitungsaufwand, da nur ein kleiner Flächenanteil präzise hergestellt werden muss.In a further advantageous embodiment, the top surface has a step profile with a stepped contact surface for the emergency operating anchor. Reduced by this geometry the processing effort, since only a small proportion of the area has to be manufactured precisely.

Alternativ oder in Kombination kann der Notbetriebsanker in Richtung der Deckfläche des Vorstufenventilkörpers eine abgesetzte Aufsitzfläche aufweisen.Alternatively or in combination, the emergency operation anchor can have a stepped seat surface in the direction of the top surface of the pre-stage valve body.

Bevorzugt weist die Aufsitzfläche eine Schneidengeometrie aufweist. Die Schneidengeometrie bezweckt eine Linienberührung zwischen dem Notbetriebsanker und dem Vorstufenventilkörper, so dass ein Winkelfehler zwischen dem Notbetriebsanker und dem Vorstufenventilkörper leicht kompensiert werden kannThe seating surface preferably has a cutting edge geometry. The cutting geometry aims at a line contact between the emergency service anchor and the pre-stage valve body, so that an angular error between the emergency service anchor and the pre-stage valve body can be easily compensated for

Um die Bewegungsfähigkeit des Notbetriebsankers zu fördern, weist dieser eine Strömungsverbindung auf, die zwei durch den Notbetriebsanker voneinander getrennte Räume der Dämpfventileinrichtung miteinander verbindet. Damit können sich keine hydraulisch abgeschlossenen Räume bilden, die einen Unterdruck- oder einen Staudruck verursachen könnten.In order to promote the mobility of the emergency operating anchor, it has a flow connection which connects two spaces of the damping valve device which are separated from one another by the emergency operating anchor. This means that no hydraulically closed rooms can form that could cause a vacuum or a dynamic pressure.

Beispielhaft kann der Notbetriebsanker im Bereich der Aufsitzfläche mindestens einen Stichkanal aufweisen. Der Notbetriebsanker wird dadurch in seiner Festigkeit nicht geschwächt.For example, the emergency operating anchor can have at least one branch channel in the area of the seat surface. The strength of the emergency operation anchor is not weakened as a result.

Alternativ kann der Notbetriebsanker an seiner äußeren Mantelfläche die mindestens eine Strömungsverbindung aufweisen.Alternatively, the emergency operating anchor can have at least one flow connection on its outer lateral surface.

Anhand der folgenden Figurenbeschreibung soll die Erfindung näher erläutert werden.The invention will be explained in more detail with the aid of the following description of the figures.

Es zeigt:

  • Fig. 1 Schnitt durch eine Dämpfventileinrichtung
  • Fig. 2 Dämpfventileinrichtung an einer Kolbenstange
It shows:
  • Fig. 1 Section through a damping valve device
  • Fig. 2 Damping valve device on a piston rod

Die Figur 1 zeigt eine Dämpfventileinrichtung 1 mit einem axial zweigeteilten Dämpfventilgehäuse 3 für einen Schwingungsdämpfer beliebiger Bauform. In der vorliegenden Ausgestaltung ist die Dämpfventileinrichtung 1 für eine bezogen auf einen äußeren Zylinder des Schwingungsdämpfers externe Anordnung vorgesehen, doch kann das Bauprinzip leicht auf eine Dämpfventileinrichtung z. B. an einer Kolbenstange adaptiert werden. In einem ersten Dämpfventilgehäuseabschnitt 5 ist ein an sich bekannter Aktuator 7 angeordnet, der eine Spule 9 umfasst, die über einen Anker 11 auf ein Vorstufenventil 13 einwirkt. Mit dem Vorstufenventil 13 wird ein Hauptstufenventil 15 angesteuert, das die Dämpfkraft im Schwingungsdämpfer erzeugt. Das Vorstufen- und das Hauptstufenventil 13; 15 sind in zweiten Dämpfventilgehäuseabschnitt 17 angeordnet, das eine Rohrgrundform ohne eine Zwischenwandung aufweist.The Figure 1 shows a damping valve device 1 with an axially split damping valve housing 3 for a vibration damper of any design. In the present embodiment, the damping valve device 1 is provided for an external arrangement with respect to an outer cylinder of the vibration damper, but the construction principle can easily be applied to a damping valve device e.g. B. be adapted to a piston rod. In a first damping valve housing section 5, an actuator 7 known per se is arranged, which comprises a coil 9, which acts on a pre-stage valve 13 via an armature 11. With the preliminary stage valve 13, a main stage valve 15 is actuated, which generates the damping force in the vibration damper. The pre-stage and main stage valve 13; 15 are arranged in the second damping valve housing section 17, which has a basic tube shape without an intermediate wall.

Das Hauptstufenventil 15 umfasst einen Hauptstufenventilkörper 19, der axial beweglich in einem zum Dämpfventilgehäuse 3 separaten Gehäuseeinsatz 21 geführt ist. Der Gehäuseeinsatz 21 ist topfförmig ausgeführt und bildet einen Steuerraum 23, über den das Hauptstufenventil 15 von dem Vorstufenventil 13 angesteuert wird. Ein Boden 25 des Gehäuseeinsatzes 21 verfügt über eine Öffnung 27, in der ein Führungsschaft 29 des Hauptstufenventilkörpers 19 geführt ist. In dem Führungsschaft 29 verlaufen ein Axialkanal 31 und ein Querkanal 33, die den Steuerraum 23 über einen Durchlass 35 in dem Boden 25 mit dem Vorstufenventil 13 verbinden.The main stage valve 15 comprises a main stage valve body 19 which is guided in an axially movable manner in a housing insert 21 separate from the damping valve housing 3. The housing insert 21 is pot-shaped and forms a control chamber 23, via which the main stage valve 15 is controlled by the pre-stage valve 13. A bottom 25 of the housing insert 21 has an opening 27 in which a guide shaft 29 of the main stage valve body 19 is guided. An axial channel 31 and a transverse channel 33 run in the guide shaft 29 and connect the control chamber 23 to the preliminary stage valve 13 via a passage 35 in the base 25.

Der Gehäuseeinsatz 21 weist außenseitig eine Profilierung auf. Dadurch bilden einander zugewandten Flächen des Dämpfventilgehäuses 3 und des Gehäuseeinsatzes 21 mindestens einen Strömungskanal 37 für einen Dämpfmediumstrom innerhalb der Dämpfventileinrichtung 1 und außenseitig verfügt der Boden 25 über Radialkanäle 55, die in die Strömungskanäle 37 übergehen.The housing insert 21 has a profile on the outside. As a result, mutually facing surfaces of the damping valve housing 3 and the housing insert 21 form at least one flow channel 37 for a damping medium flow within the damping valve device 1 and on the outside, the base 25 has radial channels 55 which merge into the flow channels 37.

Das Hauptstufenventil 15 ist als ein Sitzventil ausgeführt, so dass der Hauptstufenventilkörper 19 auf einer Hauptstufenventilsitzfläche 39 aufliegt. Radial außerhalb der Hauptstufenventilsitzfläche 39 ist mindestens ein Durchlasskanal 41 ausgeführt, der radial innerhalb des Dämpfventilgehäuses 3 angeordnet ist. Der außenseitig am Gehäuseeinsatz 21 vorliegende Strömungskanal 37 ist an den mindestens einen Durchlasskanal 41 angeschlossen.The main stage valve 15 is designed as a seat valve, so that the main stage valve body 19 rests on a main stage valve seat surface 39. Radially outside the main stage valve seat surface 39, at least one passage channel 41 is provided, which is arranged radially inside the damping valve housing 3. The outside of the housing insert 21 present flow channel 37 is connected to the at least one passage channel 41.

Die Hauptstufenventilsitzfläche 39 wird wiederum von einem Ventileinsatz 43 gebildet, über den der Gehäuseeinsatz 21 im Dämpfventilgehäuse 3 axial positioniert wird. In der vorliegenden Ausführungsform verfügt der Ventileinsatz 43 über Dämpfkanäle 45, die mit mindestens einer Ventilscheibe 47 zusammenwirken. Es handelt sich dabei aber um eine Option.The main stage valve seat surface 39 is in turn formed by a valve insert 43, via which the housing insert 21 is positioned axially in the damping valve housing 3. In the present embodiment, the valve insert 43 has damping channels 45 which interact with at least one valve disk 47. However, this is an option.

Der Gehäuseeinsatz 21 wird von einem Federelement 49 in der Bauform einer Scheibenfeder axial gegen eine Stützfläche 51 des Dämpfventilgehäuses 3 vorgespannt. Das Federelement 49 stützt sich wiederum an dem Ventileinsatz 43 ab.The housing insert 21 is axially biased by a spring element 49 in the form of a disc spring against a support surface 51 of the damping valve housing 3. The spring element 49 is in turn supported on the valve insert 43.

Grundsätzlich wäre eine Dämpfventileinrichtung 1 mit einem Hauptstufenventil 15 und einem Vorstufenventil 13 funktionsfähig. Insbesondere für den Fall, dass der Aktuator 7 nicht mehr mit Energie versorgt werden kann, verfügt diese verstellbare Dämpfventileinrichtung 1 über eine Notbetriebsfunktion.In principle, a damping valve device 1 with a main stage valve 15 and a pre-stage valve 13 would be functional. In particular in the event that the actuator 7 can no longer be supplied with energy, this adjustable damping valve device 1 has an emergency operating function.

Innerhalb des zweiten Dämpfventilgehäuseabschnitts 17 ist ein Notbetriebsanker 53 axial beweglich geführt. Eine Notbetriebsfeder 57 in der Bauform einer Druckfeder spannt den Notbetriebsanker 53 auf den Vorstufenventilkörper 59 des Vorstufenventils 13 vor. Die Notbetriebsfeder 57 stützt sich an einem gehäusefesten Bauteil ab und der Notbetriebsanker 53 liegt mit direktem Kontakt randseitig auf einer Deckfläche 61 des Vorstufenventilkörpers 59.An emergency anchor 53 is axially movably guided within the second damping valve housing section 17. An emergency operating spring 57 in the form of a compression spring biases the emergency operating armature 53 onto the pre-stage valve body 59 of the pre-stage valve 13. The emergency operating spring 57 is supported on a component fixed to the housing and the emergency operating armature 53 lies on the edge side with a direct contact on a cover surface 61 of the pre-stage valve body 59.

Die Deckfläche 61 weist ein Stufenprofil mit einer abgesetzten Kontaktfläche 63 für den Notbetriebsanker 53 auf. Auch der Notbetriebsanker 53 verfügt in Richtung der Deckfläche 61 des Vorstufenventilkörpers 59 über eine abgesetzte Aufsitzfläche 65, wobei die Aufsitzfläche 65 bevorzugt eine Schneidengeometrie aufweist.The top surface 61 has a step profile with a stepped contact surface 63 for the emergency operating anchor 53. The emergency operation anchor 53 also has a stepped seat surface 65 in the direction of the top surface 61 of the pre-stage valve body 59, the seat surface 65 preferably having a cutting edge geometry.

Der Notbetriebsanker 53 ist räumlich zwischen einem Rückschlusskörper 67 des Aktuators 7 und dem Boden 25 des Gehäuseeinsatzes 21 angeordnet und trennt damit zwei Hubräume 69; 71 für den Notbetriebsanker. Um keinen Staudruck in einem der Hubräume 69; 71 aufbauen zu lassen, verfügt der Notbetriebsanker 53 über mindestens eine Strömungsverbindung 73, die die beiden voneinander getrennten Räume 69; 71 der Dämpfventileinrichtung 1 miteinander verbindet.The emergency operation anchor 53 is spatially arranged between a yoke body 67 of the actuator 7 and the bottom 25 of the housing insert 21 and thus separates two Displacements 69; 71 for the emergency service anchor. To avoid back pressure in one of the displacements 69; To have 71 built up, the emergency operating anchor 53 has at least one flow connection 73 which separates the two separate rooms 69; 71 of the damping valve device 1 connects to one another.

Eine Strömungsverbindung 73 kann optional im Bereich der Aufsitzfläche 65 als Stichkanal ausgeführt sein, z. B. in der Form einer einfachen Prägung. Alternativ kann der Notbetriebsanker an seiner äußeren Mantelfläche die Strömungsverbindung 73 aufweisen.A flow connection 73 can optionally be designed in the area of the seat surface 65 as a branch channel, for. B. in the form of a simple embossing. Alternatively, the emergency operating anchor can have the flow connection 73 on its outer lateral surface.

In der linken Schnitthälfte ist der Notbetriebsanker in der axialen Baulänge dargestellt, vergleichbar mit dem Stand der Technik. Die rechte Schnitthälfte verdeutlicht den mit der Erfindung erreichbaren Bauraumvorteil infolge eines schmalen Notbetriebsankers 53.In the left half of the section, the emergency operation anchor is shown in its axial length, comparable to the prior art. The right half of the cut illustrates the space advantage that can be achieved with the invention as a result of a narrow emergency operating anchor 53.

Bei einer Arbeitsbewegung eines mit der Dämpfventileinrichtung versehenen Schwingungsdämpfers wird Dämpfmedium über einen Rohranschluss des Ventileinsatzes 43 in die Dämpfventileinrichtung 3 verdrängt. Das Dämpfmedium passiert dabei den mindestens einen Dämpfkanal 45 und die mindestens eine Ventilscheibe 47. Dadurch wirkt eine Abhubkraft auf den Hauptstufenventilkörper 19. Das Dämpfmedium gelangt über den Durchlass 35 in den Steuerraum 23 und übt damit auf den Hauptstufenventilkörper 19 eine Schließkraft aus. Das Vorstufenventil 13 steuert einen Abflussquerschnitt aus dem Steuerraum 23 in den Strömungskanal 37 zwischen dem Gehäuseeinsatz 21 und dem zweiten Dämpfventilgehäuseabschnitt 17. Bei intakter Energieversorgung wird der Notbetriebsanker 53 gegen die Kraft der Notbetriebsfeder 57 angehoben und damit wird der Vorstufenventilkörper 59 entlastet. Die auf den Vorstufenventilkörper 59 einwirkende Schließkraft wird dann nur noch von einer Federanordnung 75 des Aktuators 7 bestimmt, die auf den Anker 11 des Vorstufenventils 13 wirkt. Die Federanordnung 75 des Ankers 11 und die Notbetriebsfeder 57 sind funktional parallel geschaltet.During a working movement of a vibration damper provided with the damping valve device, damping medium is displaced into the damping valve device 3 via a pipe connection of the valve insert 43. The damping medium passes through at least a damping channel 45 and the at least one valve disk 47. As a result, an lifting force acts on the main stage valve body 19. The damping medium passes through the passage 35 into the control chamber 23 and thus exerts a closing force on the main stage valve body 19. The pre-stage valve 13 controls a discharge cross-section from the control chamber 23 into the flow channel 37 between the housing insert 21 and the second damping valve housing section 17. When the power supply is intact, the emergency operation armature 53 is raised against the force of the emergency operation spring 57 and the pre-stage valve body 59 is thus relieved. The closing force acting on the pre-stage valve body 59 is then only determined by a spring arrangement 75 of the actuator 7, which acts on the armature 11 of the pre-stage valve 13. The spring arrangement 75 of the armature 11 and the emergency operating spring 57 are functionally connected in parallel.

Das abfließende Dämpfmedium erreicht über die Radialkanäle 55 und den Strömungskanal 37 einen Ringraum zwischen dem zweiten Dämpfventilgehäuseabschnitt 17 und dem Ventileisatz 43, über dessen mindestens einen Durchlasskanal 41 das Dämpfmedium des Vorstufenventils 13 abfließt.The outflowing damping medium reaches an annular space via the radial channels 55 and the flow channel 37 between the second damping valve housing section 17 and the valve insert 43, via whose at least one passage channel 41 the damping medium of the pre-stage valve 13 flows out.

Sofern die Energieversorgung für den Aktuator 7 gestört ist, wirkt die gesamte Schließkraft der Notbetriebsfeder 57 über den Kontakt zwischen dem Notbetriebsanker 53 und dem Vorstufenventilkörper 59. In Summe bestimmen die Federkräfte der Federanordnung 75 und der Notbetriebsfeder 57 die auf den Vorstufenventilkörper 59 wirkende Schließkraft.If the energy supply for the actuator 7 is disturbed, the entire closing force of the emergency operating spring 57 acts via the contact between the emergency operating armature 53 and the pre-stage valve body 59. In total, the spring forces of the spring arrangement 75 and the emergency operating spring 57 determine the closing force acting on the pre-stage valve body 59.

Der Druck im Axialkanal 31 wirkt in Öffnungsrichtung und lässt den Vorstufenventilkörper 59 abheben. Dabei baut sich im Steuerraum 23 ein Schließdruck auf den Hauptstufenventilkörper 19 auf. Folglich übernimmt das Vorstufenventil 13 auch bei Ausfall der Stromversorgung für den Aktuator 7 die Notbetriebsfunktion.The pressure in the axial channel 31 acts in the opening direction and allows the pre-stage valve body 59 to lift off. A closing pressure builds up on the main stage valve body 19 in the control chamber 23. Consequently, the pre-stage valve 13 assumes the emergency operating function even if the power supply for the actuator 7 fails.

Bei einer Abhubbewegung des Hauptstufenventilkörpers 19 von seiner Hauptstufenventilsitzfläche 39 strömt Dämpfmedium nach radial außen und fließt ebenfalls über den mindestens einen Durchlasskanal 41 aus dem Dämpfventilgehäuse 3 ab.When the main stage valve body 19 is lifted off its main stage valve seat surface 39, damping medium flows radially outward and likewise flows out of the damping valve housing 3 via the at least one passage channel 41.

Das Dämpfmedium fließt dann in einen nicht dargestellten Ausgleichs- oder Arbeitsraum.The damping medium then flows into an equalizing or working space, not shown.

Die Erfindung ist nicht auf die Anwendung in einem Dämpfventil mit einseitiger Durchströmungsrichtung beschränkt. Die Figur 2 zeigt eine Ausführungsform einer verstellbaren Dämpfventileinrichtung 1 an einer Kolbenstange 77 zwischen zwei mit Dämpfmedium gefüllten Arbeitsräumen 79; 81. Der Aufbau des Vorstufenventils 13 und des Hauptstufenventils 15 sind im Detail aus der DE 10 2012 210 460 B3 bekannt. Abweichend wird ein Notbetriebsanker 53 gemäß der Figur 1 verwendet, das sich ebenfalls direkt auf dem Vorstufenventilkörper 59 abstützt, er baugleich ist mit der Ausführung nach Fig. 1. Auch in dieser Ausführung übernimmt das Vorstufenventil 13 die Funktion eines Notbetriebsventils. Bezugszeichen 1 Dämpfventileinrichtung 61 Deckfläche 3 Dämpfventilgehäuse 63 Kontaktfläche 5 erster Dämpfventilgehäuseabschnitt 65 Aufsitzfläche 7 Aktuator 67 Rückschlusskörper 9 Spule 69 Hubräume 11 Anker 71 Hubräume 13 Vorstufenventil 73 Strömungsverbindung 15 Hauptstufenventil 75 Federanordnung 17 zweiter Dämpfventilgehäuseabschnitt 77 Kolbenstange 19 Hauptstufenventilkörper 79 Arbeitsraum 21 Gehäuseeinsatz 81 Arbeitsraum 23 Steuerraum 25 Boden 27 Öffnung 29 Führungsschaft 31 Axialkanal 33 Querkanal 35 Durchlass 37 Strömungskanal 39 Hauptstufenventilsitzfläche 41 Durchlasskanal 43 Ventileinsatz 45 Dämpfkanäle 47 Ventilscheibe 49 Federelement 51 Stützfläche 53 Notbetriebsanker 55 Radialkanäle 57 Notbetriebsfeder 59 Vorstufenventilkörper The invention is not restricted to use in a damping valve with a flow direction on one side. The Figure 2 shows an embodiment of an adjustable damping valve device 1 on a piston rod 77 between two working spaces 79 filled with damping medium; 81. The structure of the pre-stage valve 13 and the main stage valve 15 are in detail from the DE 10 2012 210 460 B3 known. Deviating is an emergency operation anchor 53 according to the Figure 1 used, which is also supported directly on the pre-stage valve body 59, it is structurally identical to the version according to Fig. 1 , In this embodiment too, the preliminary stage valve 13 takes on the function of an emergency operating valve. <U> reference numerals </ u> 1 damping valve device 61 cover surface 3 Dämpfventilgehäuse 63 contact area 5 first damper housing section 65 seating surface 7 actuator 67 Return body 9 Kitchen sink 69 displacements 11 anchor 71 displacements 13 precursor valve 73 flow connection 15 Main stage valve 75 spring assembly 17 second damper valve housing section 77 piston rod 19 Main stage valve body 79 working space 21 housing insert 81 working space 23 control room 25 ground 27 opening 29 guide shaft 31 axial 33 Querkanal 35 passage 37 flow channel 39 Main stage valve seat 41 Passageway 43 valve core 45 Dämpfkanäle 47 valve disc 49 spring element 51 support surface 53 Notbetriebsanker 55 radial channels 57 Notbetriebsfeder 59 Precursor valve body

Claims (8)

  1. Adjustable damping valve device (1) for a vibration damper, comprising a main stage valve (15) which is controlled by a pilot stage valve (13), which pilot stage valve is actuatable by means of an electromagnetic actuator (7) and has a pilot stage valve body (59), wherein a closing force generated by a spring arrangement (75) of the actuator (7) acts on an armature (11) of the pilot stage valve body (59), wherein, in emergency operation, an emergency operation valve controls the main stage valve (15), characterized in that an emergency operation armature (53) is preloaded by an emergency operation spring (57) against the pilot stage valve body (59) of the pilot stage valve (13), such that the pilot stage valve (13) forms the emergency operation valve, wherein the spring arrangement (75) and the emergency operation spring (57) are connected functionally in parallel,
    and the emergency operation spring (57), as a compression spring, is supported on a component fixed with respect to a housing, wherein, in emergency operation, the closing force on the pilot stage valve body (59) is determined collectively by the spring forces of the spring arrangement (75) and of the emergency operation spring (57).
  2. Adjustable damping valve device according to Claim 1, characterized in that the emergency operation armature (53) is supported on an edge of a top surface (61) of the pilot stage valve body (59).
  3. Adjustable damping valve device according to Claim 2, characterized in that the top surface (61) has a stepped profile with an offset contact surface (63) for the emergency operation armature (53).
  4. Adjustable damping valve device according to Claim 2, characterized in that the emergency operation armature (53) has an offset setting-down surface (65) in the direction of the top surface (61) of the pilot stage valve body (59).
  5. Adjustable damping valve device according to Claim 4, characterized in that the setting-down surface (65) has a cutting edge geometry.
  6. Adjustable damping valve device according to any of Claims 1 - 5, characterized in that the emergency operation armature (53) has a flow connection (73) which connects two chambers (69; 71), which are separated from one another by the emergency operation armature (53), of the damping valve device (1) to one another.
  7. Adjustable damping valve device according to Claim 6, characterized in that the emergency operation valve armature (53) has at least one branch channel (73) in the region of the setting-down surface (65).
  8. Adjustable damping valve device according to Claim 6, characterized in that emergency operation valve armature (53) has the at least one flow connection (73) on its outer lateral surface.
EP15816715.5A 2015-01-13 2015-12-15 Adjustable damping device Active EP3245420B1 (en)

Applications Claiming Priority (2)

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DE102015200348.5A DE102015200348A1 (en) 2015-01-13 2015-01-13 Adjustable damper valve device
PCT/EP2015/079697 WO2016113056A1 (en) 2015-01-13 2015-12-15 Adjustable damping valve device

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EP3245420B1 true EP3245420B1 (en) 2020-01-29

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CN (1) CN107110276B (en)
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KR20170106388A (en) 2017-09-20
US20180003259A1 (en) 2018-01-04
DE102015200348A1 (en) 2016-07-14
CN107110276B (en) 2019-05-17
CN107110276A (en) 2017-08-29
US10760637B2 (en) 2020-09-01
EP3245420A1 (en) 2017-11-22
WO2016113056A1 (en) 2016-07-21

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